Better used on motorcycles Fit forautomobile daylight, refitting lamp,Off-road vehicle,SUV,4x4,ATV,UTB,motorcycle lampetc Fit forengineering vehicles,such asexcavator,road roller,treedozeretc Fit forall kinds of special vehicles,such asrescue vehicle,fire engine, Can also be used for trains, bus, and boats etc. Used as indoor and outdoor lighting.